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A bowl contains 20 chips, of which 9 are red, 8 are white and 3 are blue. Six chips are taken at random and without replacement. Find the probability that
(a) each of the 6 chips is red;(b) there are 3 red, 2 white and 1 blue chip among the six chips selected;(c) none of the 6 chips selected is blue; and(d) there is at least 1 white and at least 1 blue chipHINT: Consider the complement of at least 1 white and at least 1 blue chip.
Suppose the following table shows the number of colds 7 different people got during the typical cold season based on the number of times they washed they washed their hands per day during the cold season.
What would that evaluation be and what is the margin of error?
The results of a recent study regarding smoking and three types of illness are shown below. The illnesses are Emphysema, Heart Problem, and Cancer.
The heights were normally distributed, with a mean of 67.8 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Find the probability that his height is less than 65 inches.
Suppose today's sample yielded a mean of $4.19 and a standard deviation of $0.10, create and interpret a 99% confidence interval for the population standard deviation. Assume the distribution of gas prices in the area follows a normal distribution..
The odds of the Dallas Cowboys winning this year's Super Bowl are 3 to 1. Compute the probability of the Cowboys winning
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
How much time should be allowed if we wish to ensure that at least 9 out of 10 students (on average) can complete it? (round to the nearest minute).
In 1990, 5.8% of job applicants who were tested for drugs failed the test. At the 0.01 significance level, test the claim that the failure rate is now lower if a simple random sample of 1520 current job applicants results in 58 failures. Does the ..
The national average for the price of a gallon of unleaded regular gas is $1.16. I believe the price is higher in my area of the country. I want to test my claim by randomly selecting gas prices for 25 stations in my area. The following prices are..
Name an application for the use of ANOVA. This can be in a professional setting, hobby, or something you find on the internet. What are some business situations where ANOVA would be more appropriate than a Z or T test?
Can the binomial distribution be used to model the number of rare events that occur over a given time period?
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